Toxicity effects, percent control and cumulative effects of an insecticide on Periplaneta americana

Abstract

An experiment using Kepone to control the American Cockroach, Periplaneta americana L., was conducted at Instituto Biológico de São Paulo. Kepone (0.125% decachloro-octahydro 1, 3, 4 methyl - 2 H cyclobutyl - |cd| - pentyl 2 ene) as its active ingredient, was prepared as a bait and as a dough. The association of the bait plus dough and dough alone gave high daily percentage of kill, 14.0% and 13.8% respectively, and the bait treatment alone gave only 4.3% control. The bait treatment plus dough and dough alone gave 70.0% and 69.0% control, respectively, after five days, compared to 21.5% of that in which the chemical was used in bait form.